Strange attractors in brushless DC motors

Author

Hemati, Neyram

Author_Institution

Dept. of Mech. Eng. & Mech., Drexel Univ., Philadelphia, PA, USA

Volume

41

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

40

Lastpage

45

Abstract

Deals with the open-loop dynamic characteristics of smooth-air-gap brushless DC motors. The steady-state characteristics of these systems, subject to constant input voltages and constant external torques, are formulated, whereby it is shown that the presence of viscous damping friction can cause the system to possess multiple physical equilibria. Furthermore, using an affine transformation, it is shown that the open-loop dynamics of smooth-air-gap brushless DC motors and the Lorenz system, a system known to possess chaotic behavior, are equivalent. Finally, computer simulations are presented that verify the existence of strange attractors in the open-loop dynamics of brushless DC motors

Keywords

DC motors; chaos; digital simulation; electric machine analysis computing; friction; Lorenz system; affine transformation; chaotic behavior; computer simulations; constant external torques; constant input voltages; multiple physical equilibria; open-loop dynamic characteristics; smooth-air-gap brushless DC motors; steady-state characteristics; strange attractors; viscous damping friction; Brushless DC motors; Chaos; DC motors; Damping; Equations; Reluctance motors; Steady-state; Synchronous motors; Vehicle dynamics; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.260218

Filename

260218